use std::process::exit;

use mingling::macros::{gen_program, help};

pub mod res;
pub mod tokio_wrapper;

mod bucket_mgr;
use bucket_mgr::*;

mod error;
use error::*;

#[help]
fn handle_error_dispatch_not_found(_err: ErrorDispatcherNotFound) {
    let help = locale::helps::Basic::help().trim();

    // Print directly to stderr and exit with code 0
    eprintln!("{}", help);
    exit(0)
}

gen_program!();

pub mod locale {
    shakehand::locale!("locales");

    /// Determines the current locale string used by the application.
    ///
    /// The locale is resolved by checking environment variables in the following
    /// priority order:
    /// 1. `JV_LANG` — application-specific variable.
    /// 2. `APP_LANG` — general application language override.
    /// 3. `LANG` — system locale (e.g. `en_US.UTF-8`). If this variable contains a
    ///    character encoding suffix (e.g. `.UTF-8`), only the base part is kept,
    ///    and underscores (`_`) are replaced with hyphens (`-`) to form a
    ///    language tag (e.g. `en-US`).
    /// 4. Falls back to `"en"` if none of the above are set.
    pub fn current_locales() -> String {
        if let Ok(lang) = std::env::var("JV_LANG") {
            return lang;
        }
        if let Ok(lang) = std::env::var("APP_LANG") {
            return lang;
        }
        if let Ok(lang) = std::env::var("LANG") {
            if let Some(base_lang) = lang.split('.').next() {
                return base_lang.replace('_', "-");
            }
            return lang;
        }
        "en".to_string()
    }
}